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GB/T 6691-2007: Resin finishing agent -- Determination of refractive index
Status: Valid GB/T 6691: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 6691-2007 | English | 139 |
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Resin finishing agent -- Determination of refractive index
| Valid |
GB/T 6691-2007
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| GB/T 6691-1986 | English | 199 |
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Resin finishing agent--Testing methods for refractive index
| Obsolete |
GB/T 6691-1986
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PDF similar to GB/T 6691-2007
Basic data | Standard ID | GB/T 6691-2007 (GB/T6691-2007) | | Description (Translated English) | Resin finishing agent -- Determination of refractive index | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G55 | | Classification of International Standard | 71.100.01; 87.060.10 | | Word Count Estimation | 5,545 | | Date of Issue | 2007-11-28 | | Date of Implementation | 2008-06-01 | | Older Standard (superseded by this standard) | GB/T 6691-1986 | | Regulation (derived from) | China National Standard Approval Announcement2007 No.12 (Total No.112) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the method for measuring the refractive index of the resin finishing agent. This standard applies to the determination of the refractive index in the resin finishing agent. | GB/T 6691-2007: Resin finishing agent -- Determination of refractive index---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Resin finishing agent. Determination of refractive index
ICS 71.100.01; 87.060.10
G55
National Standards of People's Republic of China
Replacing GB/T 6691-1986
Determination of resin finishing agent refractive index
Posted 2007-11-28
2008-06-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard replaces GB/T 6691-1986 "Determination of the refractive index of the resin finishing agent."
This standard and GB/T 6691-1986 compared to the main changes are as follows.
--- Name specification standard "measurement of the refractive index of the resin finishing agent";
--- Increasing the content of the test report (Chapter 5 of this edition).
The standard proposed by China Petroleum and Chemical Industry Association.
This standard by the National Standardization Technical Committee Dye (SAC/TC134) centralized.
This standard was drafted. Shenyang Chemical Research Institute.
The main drafters of this standard. Kiran Qin, Shen Jiong day.
This standard was first published in 1986.
Determination of resin finishing agent refractive index
1 Scope
This standard specifies the method for measuring the refractive index of the resin finishing agent.
This standard applies to the determination of the refractive index in the resin finishing agent.
Principle 2
Shows, the refractive index can be used like formula (1).
(1)
Isotropic pure substance, in a certain wavelength of light, temperature, pressure, and its refractive index is an inherent constant of the substance. A refractive index
Like sodium D line spectrum, measured at a temperature of 20 ℃ when the air value, represented by state 20D.
(2)
Resin finishing agent is an aqueous solution of the resin at the beginning abbreviated form, having a refractive index higher than that of water, to increase the value of its non-volatile components contained in the share
Proportional to the mass, the refractive index of the standard curve from each resin finishing agent, the sample can be determined that the mass fraction of non-volatile components.
3 instruments and equipment
a) Abbe refractometer;
b) water bath. accurate to 0.1 ℃.
Test Method 4
Refractometer advance correction water before use, 20 ℃ when the refractive index of water is 1.3330.
Refractometer placed in a well-lit location, connected to the water bath, the refractometer prism temperature was adjusted to 20 ℃, separated ribs on both sides
Mirror, a few drops of the sample injection, immediately closed prism. In this case the sample and prism maintained for several minutes at 20 ℃. Knob to adjust the field of view prism divided
Light and shade in two parts, compensation knob rotation, and eliminate iridescent clear dividing line between light and dark, light and dark boundary line continues adjusting knob to align the cross
Crossing point. After recording the ruler scale readings, the readings should be read in the fourth decimal place (the last for the estimates). Turns from side
And then the other side will be aligned on the boundary cross point to observe and record the readings repeated three times, the difference between the readings shall not exceed 0.0003.
Take three readings of the arithmetic mean of the refractive index of the sample.
5 Test Report
The test report includes the following.
a) the name of the measured resin finishing agent;
b) number of this standard;
c) Test conditions;
Name d) the use of the instrument, model;
e) test results;
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